import { delay, cloneDeep, isBoolean, isFunction, getKeyList } from '@pureadmin/utils'
import Sortable from 'sortablejs'
import { type PropType, ref, unref, computed, nextTick, defineComponent, getCurrentInstance } from 'vue'
import CollapseIcon from '@/assets/table-bar/collapse.svg?component'
import DragIcon from '@/assets/table-bar/drag.svg?component'
import ExpandIcon from '@/assets/table-bar/expand.svg?component'
import RefreshIcon from '@/assets/table-bar/refresh.svg?component'
import SettingIcon from '@/assets/table-bar/settings.svg?component'
import { useEpThemeStoreHook } from '@/store/modules/epTheme'

import ExitFullscreen from '~icons/ri/fullscreen-exit-fill'
import Fullscreen from '~icons/ri/fullscreen-fill'

const props = {
  /** 头部最左边的标题 */
  title: {
    type: String,
    default: '列表',
  },
  /** 对于树形表格，如果想启用展开和折叠功能，传入当前表格的ref即可 */
  tableRef: {
    type: Object as PropType<any>,
  },
  /** 需要展示的列 */
  columns: {
    type: Array as PropType<TableColumnList>,
    default: () => [],
  },
  isExpandAll: {
    type: Boolean,
    default: true,
  },
  tableKey: {
    type: [String, Number] as PropType<string | number>,
    default: '0',
  },
}

export default defineComponent({
  name: 'PureTableBar',
  props,
  emits: ['refresh', 'fullscreen'],
  setup(props, { emit, slots, attrs }) {
    const size = ref('default')
    const loading = ref(false)
    const checkAll = ref(true)
    const isFullscreen = ref(false)
    const isIndeterminate = ref(false)
    const instance = getCurrentInstance()!
    const isExpandAll = ref(props.isExpandAll)
    const filterColumns = cloneDeep(props?.columns).filter((column) =>
      isBoolean(column?.hide) ? !column.hide : !(isFunction(column?.hide) && column?.hide())
    )
    let checkColumnList = getKeyList(cloneDeep(props?.columns), 'label')
    const checkedColumns = ref(getKeyList(cloneDeep(filterColumns), 'label'))
    const dynamicColumns = ref(cloneDeep(props?.columns))

    const getDropdownItemStyle = computed(() => {
      return (s) => {
        return {
          background: s === size.value ? useEpThemeStoreHook().epThemeColor : '',
          color: s === size.value ? '#fff' : 'var(--el-text-color-primary)',
        }
      }
    })

    const iconClass = computed(() => {
      return [
        'text-black',
        'dark:text-white',
        'duration-100',
        'hover:text-primary!',
        'cursor-pointer',
        'outline-hidden',
      ]
    })

    const topClass = computed(() => {
      return [
        'flex',
        'justify-between',
        'pt-[3px]',
        'px-[11px]',
        'border-b-[1px]',
        'border-solid',
        'border-[#dcdfe6]',
        'dark:border-[#303030]',
      ]
    })

    function onReFresh() {
      loading.value = true
      emit('refresh')
      delay(500).then(() => (loading.value = false))
    }

    function onExpand() {
      isExpandAll.value = !isExpandAll.value
      toggleRowExpansionAll(props.tableRef.data, isExpandAll.value)
    }

    function onFullscreen() {
      isFullscreen.value = !isFullscreen.value
      emit('fullscreen', isFullscreen.value)
    }

    function toggleRowExpansionAll(data, isExpansion) {
      data.forEach((item) => {
        props.tableRef.toggleRowExpansion(item, isExpansion)
        if (item.children !== undefined && item.children !== null) {
          toggleRowExpansionAll(item.children, isExpansion)
        }
      })
    }

    function handleCheckAllChange(val: boolean) {
      checkedColumns.value = val ? checkColumnList : []
      isIndeterminate.value = false
      dynamicColumns.value.map((column) => (val ? (column.hide = false) : (column.hide = true)))
    }

    function handleCheckedColumnsChange(value: string[]) {
      checkedColumns.value = value
      const checkedCount = value.length
      checkAll.value = checkedCount === checkColumnList.length
      isIndeterminate.value = checkedCount > 0 && checkedCount < checkColumnList.length
    }

    function handleCheckColumnListChange(val: boolean, label: string) {
      dynamicColumns.value.filter((item) => item.label === label)[0].hide = !val
    }

    async function onReset() {
      checkAll.value = true
      isIndeterminate.value = false
      dynamicColumns.value = cloneDeep(props?.columns)
      checkColumnList = []
      checkColumnList = await getKeyList(cloneDeep(props?.columns), 'label')
      checkedColumns.value = getKeyList(cloneDeep(filterColumns), 'label')
    }

    const dropdown = {
      dropdown: () => (
        <el-dropdown-menu class="translation">
          <el-dropdown-item style={getDropdownItemStyle.value('large')} onClick={() => (size.value = 'large')}>
            宽松
          </el-dropdown-item>
          <el-dropdown-item style={getDropdownItemStyle.value('default')} onClick={() => (size.value = 'default')}>
            默认
          </el-dropdown-item>
          <el-dropdown-item style={getDropdownItemStyle.value('small')} onClick={() => (size.value = 'small')}>
            紧凑
          </el-dropdown-item>
        </el-dropdown-menu>
      ),
    }

    /** 列展示拖拽排序 */
    const rowDrop = (event: { preventDefault: () => void }) => {
      event.preventDefault()
      nextTick(() => {
        const wrapper: HTMLElement = (instance?.proxy?.$refs[`GroupRef${unref(props.tableKey)}`] as any).$el
          .firstElementChild
        Sortable.create(wrapper, {
          animation: 300,
          handle: '.drag-btn',
          onEnd: ({ newIndex, oldIndex, item }) => {
            const targetThElem = item
            const wrapperElem = targetThElem.parentNode as HTMLElement
            const oldColumn = dynamicColumns.value[oldIndex]
            const newColumn = dynamicColumns.value[newIndex]
            if (oldColumn?.fixed || newColumn?.fixed) {
              // 当前列存在fixed属性 则不可拖拽
              const oldThElem = wrapperElem.children[oldIndex] as HTMLElement
              if (newIndex > oldIndex) {
                wrapperElem.insertBefore(targetThElem, oldThElem)
              } else {
                wrapperElem.insertBefore(targetThElem, oldThElem ? oldThElem.nextElementSibling : oldThElem)
              }
              return
            }
            const currentRow = dynamicColumns.value.splice(oldIndex, 1)[0]
            dynamicColumns.value.splice(newIndex, 0, currentRow)
          },
        })
      })
    }

    const isFixedColumn = (label: string) => {
      return dynamicColumns.value.filter((item) => item.label === label)[0].fixed ? true : false
    }

    const rendTippyProps = (content: string) => {
      // https://vue-tippy.netlify.app/props
      return {
        content,
        offset: [0, 18],
        duration: [300, 0],
        followCursor: true,
        hideOnClick: 'toggle',
      }
    }

    const reference = {
      reference: () => <SettingIcon class={['w-[16px]', iconClass.value]} v-tippy={rendTippyProps('列设置')} />,
    }

    return () => (
      <>
        <div
          {...attrs}
          class={[
            'w-full',
            'px-2',
            'pb-2',
            'bg-bg_color',
            isFullscreen.value ? ['h-full!', 'z-2002', 'fixed', 'inset-0'] : 'mt-2',
          ]}
        >
          <div class="flex justify-between w-full h-[60px] p-4">
            {slots?.title ? slots.title() : <p class="font-bold truncate">{props.title}</p>}
            <div class="flex items-center justify-around">
              {slots?.buttons ? <div class="flex mr-4">{slots.buttons()}</div> : null}
              {props.tableRef?.size ? (
                <>
                  <ExpandIcon
                    class={['w-[16px]', iconClass.value]}
                    style={{
                      transform: isExpandAll.value ? 'none' : 'rotate(-90deg)',
                    }}
                    v-tippy={rendTippyProps(isExpandAll.value ? '折叠' : '展开')}
                    onClick={() => onExpand()}
                  />
                  <el-divider direction="vertical" />
                </>
              ) : null}
              <RefreshIcon
                class={['w-[16px]', iconClass.value, loading.value ? 'animate-spin' : '']}
                v-tippy={rendTippyProps('刷新')}
                onClick={() => onReFresh()}
              />
              <el-divider direction="vertical" />
              <el-dropdown v-slots={dropdown} trigger="click" v-tippy={rendTippyProps('密度')}>
                <CollapseIcon class={['w-[16px]', iconClass.value]} />
              </el-dropdown>
              <el-divider direction="vertical" />

              <el-popover
                v-slots={reference}
                placement="bottom-start"
                popper-style={{ padding: 0 }}
                width="200"
                trigger="click"
              >
                <div class={[topClass.value]}>
                  <el-checkbox
                    class="-mr-1!"
                    label="列展示"
                    v-model={checkAll.value}
                    indeterminate={isIndeterminate.value}
                    onChange={(value) => handleCheckAllChange(value)}
                  />
                  <el-button type="primary" link onClick={() => onReset()}>
                    重置
                  </el-button>
                </div>

                <div class="pt-[6px] pl-[11px]">
                  <el-scrollbar max-height="36vh">
                    <el-checkbox-group
                      ref={`GroupRef${unref(props.tableKey)}`}
                      modelValue={checkedColumns.value}
                      onChange={(value) => handleCheckedColumnsChange(value)}
                    >
                      <el-space direction="vertical" alignment="flex-start" size={0}>
                        {checkColumnList.map((item, index) => {
                          return (
                            <div class="flex items-center">
                              <DragIcon
                                class={[
                                  'drag-btn w-[16px] mr-2',
                                  isFixedColumn(item) ? 'cursor-no-drop!' : 'cursor-grab!',
                                ]}
                                onMouseenter={(event: { preventDefault: () => void }) => rowDrop(event)}
                              />
                              <el-checkbox
                                key={index}
                                label={item}
                                value={item}
                                onChange={(value) => handleCheckColumnListChange(value, item)}
                              >
                                <span
                                  title={item}
                                  class="inline-block w-[120px] truncate hover:text-text_color_primary"
                                >
                                  {item}
                                </span>
                              </el-checkbox>
                            </div>
                          )
                        })}
                      </el-space>
                    </el-checkbox-group>
                  </el-scrollbar>
                </div>
              </el-popover>
              <el-divider direction="vertical" />

              <iconifyIconOffline
                class={['w-[16px]', iconClass.value]}
                icon={isFullscreen.value ? ExitFullscreen : Fullscreen}
                v-tippy={isFullscreen.value ? '退出全屏' : '全屏'}
                onClick={() => onFullscreen()}
              />
            </div>
          </div>
          {slots.default({
            size: size.value,
            dynamicColumns: dynamicColumns.value,
          })}
        </div>
      </>
    )
  },
})
